Adriana Lima may have a job that requires her to look great all the time, but that doesn’t mean it’s always easy.

She has to work hard to keep her body in such amazing shape and she admitted that it can sometimes be difficult and frustrating.

Lima and the other angels recently walked at the 2014 Victoria’s Secret Fashion Show in London and after having two children, she said she had to prepare her body and her mind for the show.

“Since we are filming a television special that is going to air in over 181 countries—we’re not wearing that much, there’s a lot of skin—you have to pay more attention to your body. So yes, there is a little bit of extra working out involved,” Lima told Us Weekly.

She also admitted that it is harder for her to get in shape after having two kids.

“My body has changed a lot since I gave birth—it happens,” Lima said. “I work out and I look after myself. I take this seriously because it’s my job.” But most of all she does it to boost her confidence, saying, “I want to feel comfortable!”

Lima’s hard work paid off and she looked great at her last Victoria’s Secret show. She plans to retire at the end of the season.